@article{JMLR:v17:14-423,
  author  = {Jing Zhao and Shiliang Sun},
  title   = {Variational Dependent Multi-output Gaussian Process Dynamical Systems},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {121},
  pages   = {1--36},
  url     = {http://jmlr.org/papers/v17/14-423.html}
}